Last updated: February 24, 2025
In July, Half Moon Bay welcomes visitors with its mild coastal climate, characterized by a maximum temperature of 20°C (69°F) and an average of 15°C (59°F), coupled with a refreshing minimum of 11°C (51°F). With humidity levels at a comfortable 87% and negligible precipitation of just 3 mm (0.1 in) across the entire month, the region offers perfect conditions for outdoor activities and exploring its stunning natural beauty. Enjoy a delightful summer escape in this coastal haven where sunny days and cool ocean breezes create a captivating experience.
July in Half Moon Bay brings mild coastal temperatures that are characteristic of summer in this picturesque region. With minimums around 11°C (51°F) and an average hovering at 15°C (59°F), the warmth is inviting yet tempered by the ocean breeze. Daytime highs peak at 20°C (69°F), providing just enough warmth for beach outings and leisurely strolls along the shore. This month stands out for its stability, as temperatures remain significantly cooler compared to the sweltering heat found in other parts of the United States, making it an ideal retreat for those seeking a pleasant escape into nature. As the summer progresses, the gradual rise in average temperatures can be clearly observed, setting the stage for an enjoyable outdoor experience amid the stunning coastal scenery.
In Half Moon Bay, July stands out for its remarkably low precipitation, recording just 3 mm (0.1 in), which is typical for this time of year. Dry spells dominate the summer months, as evidenced by the absence of rainfall, with no precipitation days noted in July. This minimal amount continues a trend seen from June onward, where the region transitions from the wetter winter season to a more arid summer. The shift is stark when compared to the earlier months; for instance, January and February experience nearly 100 mm (4 in) of rain over several days. As the year progresses, this steady decline in precipitation highlights Half Moon Bay's seasonal variations, encouraging outdoor activities and sunny beach days during the peak of summer.
In July, Half Moon Bay experiences its peak humidity at 87%, a notable increase from the preceding month. This uptick marks a continuation of the region's moisture-laden summer, which begins in earnest as June wraps up with a humidity of 84%. Throughout the year, humidity levels exhibit a discernible pattern, starting high at 85% in January and gradually easing into the spring months before rising again in the summer. As July and August share the same humidity level, residents and visitors can expect the air to feel particularly sticky, creating a lush coastal atmosphere that is characteristic of this time in coastal California. Following the humid summer, the season transitions into a drier autumn, with levels consistently dropping to 80% in October and further declining as winter approaches.
In July, Half Moon Bay experiences its peak UV Index, maintaining a high level of 11, which falls under the extreme exposure category. This means that even brief sun exposure can lead to skin damage in just 10 minutes. The trend from June to July indicates a shift from an already significant UV Index to its highest point of the year, highlighting the importance of sun protection during this month. Following the summer months, the UV Index begins to taper off, dropping to 10 in August and further declining into the fall. To stay informed and prepared for the sun's intensity, check the comprehensive details for Half Moon Bay UV Index.
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In July, Half Moon Bay basks in the warmth of summer, enjoying 349 hours of sunshine—a slightly less radiant month compared to the peak of June but still a vibrant time for outdoor activities. This sunny interlude reflects a broader trend of increasing daylight, as the region greets more sun each month from January's modest 151 hours to the sunny highs of late spring and early summer. While August follows with 320 hours, the overall pattern indicates a gentle decline toward autumn, yet the warmth of July remains a highlight in this coastal town's yearly rhythm, encouraging residents and visitors alike to soak in those golden rays before the days start to shorten.
In Half Moon Bay, July brings a noticeable dip in sunshine, with only a 30% chance of sunny weather. This trend marks a stark contrast to the sunnier months of spring, where chances range from 56% in February to a peak of 60% in March. While the summer months of August and September offer slight improvements at 43% and 47% respectively, July stands out as a month where overcast skies typically prevail. As such, those planning summer activities in Half Moon Bay might consider preparing for a mix of sun and clouds, keeping in mind that this coastal town tends to embrace a more mellow, misty atmosphere during mid-summer.
In Half Moon Bay, July marks a peak in daylight duration, maintaining a robust 14 hours of sunlit skies, similar to June. This consistent exposure to daylight not only uplifts the spirits but also encourages outdoor activities and beach excursions. As summer deepens, residents and visitors alike enjoy the bright days before the gradual decrease begins in August. Notably, this bright plateau contrasts with the shorter daylight spans of the winter months, particularly in December and January, when the sun graces the town with just 9 hours a day. This evolution of daylight serves as a vivid reminder of the shifting seasons, creating a rhythmic pattern that shapes experiences and lifestyles throughout the year.
In July, the winds at Half Moon Bay lose some of their earlier momentum, with an average speed of 3.4 m/s (8 mph), marking a slight decline from the breezier conditions of the preceding months. This trend of diminishing winds continues into August, where speeds dip further to 3.3 m/s (7 mph), suggesting a calming atmosphere as summer unfolds. Interestingly, while July typically sees milder breezes compared to the more blustery spring months, it maintains a steady flow that complements the coastal beauty. As the year progresses towards autumn, the winds gradually pick up again, indicative of seasonal shifts that will bring renewed gusts by October. Overall, July embodies a serene transition, allowing visitors to enjoy the tranquil coastal views without the usual rush of wind.
The weather in Half Moon Bay changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of July's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Half Moon Bay and find detailed weather information for every month.
When comparing the weather in July and January, notable differences emerge. July typically features milder conditions with average temperatures ranging from a minimum of 11°C (51°F) to a maximum of 20°C (68°F), accompanied by very light precipitation of just 3 mm (0.1 in) and no rainy days, creating a warm and relatively dry atmosphere with high humidity at 87%. In contrast, January sees cooler temperatures, with a range from 5°C (41°F) to a maximum of 20°C (68°F). This month experiences significantly higher precipitation, totaling 102 mm (4.0 in) over 9 rainy days, resulting in slightly lower humidity at 85%. For more detailed information, visit Half Moon Bay weather in January.
In comparing the weather between July and February, we see notable differences in temperature and precipitation levels. July features a milder temperature range with minimums around 11°C (51°F), averaging 15°C (59°F), and a maximum of 20°C (69°F), while February has slightly cooler temperatures with minimums at 5°C (41°F), averaging 11°C (53°F), and similarly peaking at 20°C (69°F). However, February experiences significantly more precipitation, totaling 101 mm (4.0 in) over 9 rainy days, compared to July's dry conditions with only 3 mm (0.1 in) and no recorded precipitation days. Despite both months having the same maximum temperature, July boasts higher humidity at 87%, contrasting with February's relative 82% humidity. For more details, you can visit Half Moon Bay weather in February.
When comparing the weather of July and March, it's clear that July is generally warmer and drier. July temperatures range from a minimum of 11°C (51°F) to a maximum of 20°C (69°F), with an average of 15°C (59°F) and only 3 mm of precipitation, making it a notably dry month. In contrast, March features cooler temperatures, with a minimum of 7°C (44°F), an average of 12°C (53°F), and a maximum of 19°C (67°F). Additionally, March experiences significantly more rainfall, accumulating 77 mm (3.0 in) over 11 days, alongside a slightly lower humidity of 82%. For more detailed weather insights, check out Half Moon Bay weather in March.
When comparing the weather in July and April, several notable differences emerge. July typically enjoys milder temperatures, with a minimum of 11°C (51°F) and an average of 15°C (59°F), peaking at a maximum of 20°C (69°F). In contrast, April experiences a wider temperature range, with a minimum of 7°C (45°F), an average of 12°C (55°F), and can reach up to 25°C (78°F). Additionally, July boasts very little precipitation, with only 3 mm (0.1 in) recorded across zero rainy days and a higher humidity level of 87%. Meanwhile, April is significantly wetter, with 34 mm (1.3 in) of rainfall over five days, alongside lower humidity at 79%. For a more detailed understanding of April conditions, you can check out Half Moon Bay weather in April.
When comparing the weather in July and May, July showcases slightly warmer temperatures, with a minimum of 11°C (51°F) and an average of 15°C (59°F), while May has a minimum of 9°C (48°F) and an average of 13°C (56°F). Interestingly, May experiences more precipitation, totaling 22 mm (0.9 in) over 2 days, compared to July's dry spell, which records only 3 mm (0.1 in) with no rainy days. Humidity levels are fairly similar, with July at 87% and May slightly lower at 83%. For further details, you can check Half Moon Bay weather in May.
In comparing the weather between June and July, July maintains a largely stable temperature range with minimums around 11°C (51°F), averages of 15°C (59°F), and a maximum of 20°C (69°F). In contrast, June features a wider temperature span, with lows at 10°C (51°F) and highs reaching up to 27°C (81°F), showcasing a much warmer average. Both months experience minimal precipitation, with July recording just 3 mm (0.1 in) and June slightly higher at 4 mm (0.2 in), yet both months had no rainy days. Humidity levels are similar, with July at 87% compared to June's 84%. For more detailed insights, check out Half Moon Bay weather in June.
In comparing the weather between July and August, we can observe some notable differences despite their similarities. July features a minimum temperature of 11°C (51°F) and an average of 15°C (59°F), with a maximum of 20°C (69°F). In contrast, August sees a slightly warmer climate, with minimums remaining the same at 11°C (53°F), but an average increase to 16°C (61°F) and a maximum reaching 24°C (76°F). Both months experience minimal precipitation, with just 3 mm (0.1 in) and no rainy days; however, the humidity remains constant at 87%. For more detailed information, you can check out Half Moon Bay weather in August.
July and September exhibit some notable differences in weather patterns. In July, temperatures range from a minimum of 11°C (51°F) to a maximum of 20°C (69°F), with an average of 15°C (59°F) and a relative humidity of 87%. Interestingly, July sees no recorded precipitation, making it a dry month. In contrast, September offers a wider temperature range, with a minimum of 11°C (52°F), an average of 16°C (62°F), and a striking maximum of 31°C (88°F). Despite maintaining similar humidity levels at 86%, September also experiences no precipitation. For more details on September weather, you can visit Half Moon Bay weather in September.
In July, the weather tends to be mild with minimum temperatures around 11°C (51°F) and an average of 15°C (59°F), reaching a maximum of 20°C (69°F). The month is quite dry, recording only 3 mm (0.1 in) of precipitation over the course of 0 days, while humidity remains relatively high at 87%. In contrast, October experiences slightly cooler minimum temperatures at 9°C (49°F) but showcases warmer daytime highs averaging up to 27°C (80°F). Precipitation increases noticeably to 27 mm (1.1 in), spread over 2 days, and the humidity drops to 80%. For more detailed information, you can visit Half Moon Bay weather in October.
In comparing the weather between July and November, July showcases warmer temperatures with a minimum of 11°C (51°F) and a maximum of 20°C (69°F), alongside very low precipitation at just 3 mm (0.1 in) and humidity levels at 87%. In contrast, November experiences cooler temperatures, with a minimum of 7°C (45°F) and an average of 13°C (56°F), yet reaches a maximum similar to July at 21°C (70°F). However, November has significantly higher precipitation, totaling 48 mm (1.9 in) over 5 days, and a slightly lower humidity of 79%. For more insights into the November climate, visit Half Moon Bay weather in November.
In July, the weather is generally mild and pleasant, with temperatures ranging from a minimum of 11°C (51°F) to a maximum of 20°C (69°F). The month sees very little precipitation, with only 3 mm reported and no rainy days, contributing to a high humidity level of 87%. In contrast, December experiences cooler temperatures, with a minimum of 6°C (44°F) and an average of 12°C (53°F), peaking at 19°C (67°F). This month is notably wetter, with 92 mm of precipitation over 10 rainy days, although humidity is lower at 79%. For more detailed insights into the December weather, you can visit Half Moon Bay weather in December.
In July, Half Moon Bay experiences a delightful coastal climate characterized by mild temperatures and minimal precipitation, setting it apart from the wetter months of the year. With the mercury hovering around a comfortable average of 15°C (59°F) and an impressive absence of rain, this month offers perfect opportunities for outdoor activities and enjoying the stunning coastal views. The high humidity of 87% adds a refreshing touch to the warm days, ensuring that visitors feel the gentle embrace of the ocean breeze. For anyone looking to explore the best of this enchanting locale, July is an ideal time to dive into its beauty. For more detailed insights on seasonal weather, check out Half Moon Bay Climate.